Riyad as-Salihin, Book 1, Hadith 358 (In-Book)

Abu Sa'id Samurah bin Jundub (May Allah be pleased with him) reported: I was a boy during the lifetime of Messenger of Allah, and used to commit to my memory what he said, but I do not narrate what I preserved because there were among us people who were older than me.[Al-Bukhari and Muslim].

وعن أبي سعيد سمرة بن جندب رضي الله عنه قال‏:‏ لقد كنت على عهد رسول الله صلى الله عليه وسلم غلامًا ، فكنت أحفظ عنه، فما يمنعني من القول إلا أن ههنا رجالاً أسن مني‏.‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏ ‏.‏

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